BS 7273-4 PDF

BSI, the business standards company has revised BS Code of Practice for the operation of fire protection measures – Part 4: Actuation of release . BS Code of practice for the operation of fire protection measures – part 4: Actuation of release mechanisms for doors was published on. The British Standard BS is a ‘Code of practice for the operation of fire protection measures’ specifically for the ‘Actuation of release mechanisms for .

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New BS 7273-4 CPD course on release mechanisms for fire doors

Category A – the most stringent – is to be applied for the highest risk situations, requiring fail safe operation when the cabling forming the communication path is broken, and when there are faults or disconnections that prevent the operation of the mechanism in a fire. This is a full revision of the standard and introduces the following principal changes: Category C applications require additional consideration as they apply when the fire system connects to the release system indirectly, for example via an access control system.

Please complete the form below. This is intended to make the recommendations clearer and to remove possible confusion where a single diagram has been used to convey several principles applying to detector siting and spacing There have been changes in terminology to assist users of the standard. Please complete the form below. Who is this standard for? The guidance in Annex A of BS is now normative which means that if control of doors is performed by a fire detection system the requirements of the category must be met.


As one door opens | Means of Escape – Fire Safety Magazine

It helps to ensure that a building can be safely evacuated where there are fire doors held open or exit doors that need to be released by the fire alarm system.

This is a full revision of the standard and bbs the following principal changes:. You may find similar items within these categories by selecting from the choices below:.

A system that cannot, must release all doors in a building for every single fault on the control panel.

Control of doors within a building by the fire detection system has been commonplace for many years. Fire doors are typically designed to be kept closed at all times so that fire and heat are contained and their spread minimized.

Designers must ensure that the controller itself is also failsafe. Customers who bought this product also bought BS It is fair to say that since its original introduction the standard has been largely ignored apart for a few isolated cases of best practice.

You may experience issues viewing this site in 72773-4 Explorer 9, 10 or Although it was first introduced inthe revision of BS has brought the subject of release mechanisms for fire doors into sharp focus.

Text has been shortened and simplified to make the standard more straightforward to use. Therefore in some circumstances fire doors fail to satisfy enforcers that recommendations of BS are being met. Balance this with the need to conveniently use the building in normal operation and you can potentially have conflicting priorities.

Actuation of release mechanisms for doors. Previously, a device local to the doors effectively switched the doors to fail safe mode and released electrically secured fire exits and closed fire doors held open on magnetic door retainers.

FIA Publish New technical documents on BS 7273-4:2015

Although it was first introduced inthe revision of BS has brought the subject of release mechanisms for fire doors into sharp focus. However, this is not always the case and a truly fail safe mode is not achieved.


This vs is for testing whether you are a human visitor and to prevent automated spam submissions. Search results Revised standard: This website is best viewed with browser version of up to Microsoft Internet Explorer 8 or Firefox 3. However, it should be remembered that this type of system might be inappropriate in ba environments such as banks, hospitals and prisons, due to security issues, where doors could be held open to allow access to people who should have restricted movement.

The prompt evacuation 72733-4 a burning building requires as few obstacles and obstructions as possible and, similarly, sb the spread of fire and heat in such a situation relies upon the use of well-engineered fire doors that can be reliably closed in the event of a fire.

If the listed faults occur in either the door management system, the fire detection system, or the interconnection between the two, the system should perform as it would in the event of a fire and release the doors.

This is achieved through use of 723-4 fire doors. Revised diagrams for the siting and spacing of the smoke detectors in relation to electrically held-open fire doors Inclusion of which category of actuation is appropriate for a particular application Simplified recommendations and terminology, with some of the commentary text tabulated and moved to new informative annexes.

Search results As one door opens